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1b4d8c0fb6
Added PHP API for registering tick functions. Ticks is a per-instruction
callback in Zend that allows us to implement cooperative multitasking
within PHP. Example:
In extension code:
php_add_tick_function(my_tick_func);
void my_tick_func(int count) {
php_printf("[tick %d]", count);
}
In PHP code:
<?php
declare(ticks = 1) {
print "there should be two ticks here.\n";
}
?>
81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
/*
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+----------------------------------------------------------------------+
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| PHP version 4.0 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997, 1998, 1999, 2000 The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.02 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available at through the world-wide-web at |
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| http://www.php.net/license/2_02.txt. |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Stig Bakken <ssb@fast.no> |
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+----------------------------------------------------------------------+
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*/
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/* $Id$ */
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#include "php.h"
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#include "php_ticks.h"
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int php_startup_ticks(PLS_D)
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{
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zend_llist_init(&PG(tick_functions), sizeof(void(*)(int)), NULL, 1);
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return SUCCESS;
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}
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void php_shutdown_ticks(PLS_D)
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{
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zend_llist_destroy(&PG(tick_functions));
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}
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static int php_compare_tick_functions(void *elem1, void *elem2)
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{
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void(*func1)(int);
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void(*func2)(int);
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memcpy(&func1, elem1, sizeof(void(*)(int)));
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memcpy(&func2, elem2, sizeof(void(*)(int)));
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return (func1 == func2);
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}
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PHPAPI void php_add_tick_function(void (*func)(int))
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{
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PLS_FETCH();
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zend_llist_add_element(&PG(tick_functions), (void *)&func);
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}
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PHPAPI void php_remove_tick_function(void (*func)(int))
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{
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PLS_FETCH();
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zend_llist_del_element(&PG(tick_functions), func,
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(int(*)(void*,void*))php_compare_tick_functions);
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}
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static void php_tick_iterator(void *data, void *arg)
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{
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void (*func)(int);
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memcpy(&func, data, sizeof(void(*)(int)));
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func(*((int *)arg));
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}
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void php_run_ticks(int count)
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{
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PLS_FETCH();
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zend_llist_apply_with_argument(&PG(tick_functions), (void(*)(void*,void*))php_tick_iterator, &count);
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}
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* End:
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*/
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